Excavation is the process in which archaeologists make a cavity in the ground by digging. This is the most common way of finding artifacts. However, every time there is an excavation, we destroy the data we are creating. In other words, after a site has been excavated, all that we have are the data and evidence, but the actual site is
gone.

This is why we must stress the importance of recording your data. This can be done with graphs, writing, pictures, photographs, and video. We also must evaluate the site correctly, because we will only see it once. If we don't, we may ignore some very important evidence. We must determine the chronological order of the artifacts through processes such as stratification, and we may want to understand the time, success, economy, and people of a certain area.

Sometimes archaeological sites are destroyed even before the archaeologists get there. Now more than ever, important sites being destroyed due to human activity. Attempting to excavate these sites is called rescue archaeology in Europe. Here, there is cultural resource management that tries to preserve these archaeological sites. Though ways of excavating have changed through the years, many principles remain the same